document.write( "Question 186099: 15-^2x+2=13
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Algebra.Com's Answer #139599 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

You can put this solution on YOUR website!
15-^2x+2 = 13
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\n" ); document.write( "\"^\" here means raising to a power (exponent); Square root can be written sqrt( )
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\n" ); document.write( "So I assume you mean:
\n" ); document.write( " $\"15-sqrt%282x%2B2%29+=+13\"$
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\n" ); document.write( " $\"-sqrt%282x%2B2%29+=+13-15\"$
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\n" ); document.write( " $\"-sqrt%282x%2B2%29+=+-2\"$
\n" ); document.write( "Multiply both sides by -1
\n" ); document.write( " $\"sqrt%282x%2B2%29+=+2\"$
\n" ); document.write( "Square both sides, gets rid of the radical on the left
\n" ); document.write( "2x + 2 = 4
\n" ); document.write( "2x = 4 - 2
\n" ); document.write( "2x = 2
\n" ); document.write( "x = 1
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\n" ); document.write( "Check solution in original equation
\n" ); document.write( " $\"15-sqrt%282%281%29+%2B+2%29+=+13\"$
\n" ); document.write( " $\"15-sqrt%284%29+=+13\"$
\n" ); document.write( "15 - 2 = 13\r
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